Merging in refactor of the C++ code, which is moved out of 'pygtk' and into 'ascxx'.
Adding support for IPOPT 3.9.1, the current latest version.
Support in dtar for parallel builds (possibly needs some testing still).

Moved 'incidence.c' and 'incidence.h' to base/generic/system.
Change system_write_graph to use GraphViz directly, and create PNG output.
Created 'TestSystem' suite in test.py and added test for PNG graph create (no checking performed though so far).
Updated Simulation::write to use the new system_write_graph syntax (no filters any more).
Fixed WITH_GRAPHVIZ flags for graph.c.

Fixed build problem on MinGW GCC 3.4.2
Fixed problem with font in IPython console on Windows
Some attempts to fix problems with FILE* support in Python bindings
gfortran is now the preferred FORTRAN compiler.
Comment out failing FILE* tests for the moment.

Added and performed basic tests of integrator_ida_write_matrix. Generalised the write_matrix
routine so that *any* requested output can be retrieved from the integrator (for the case
of IDA this is y and y', but it could equally be more complicated stuff.)

Removed the 'command line solver' from the Tcl/Tk interface.
Deactivated the 'plot' command in slv_interface.
Eliminated various #include <compiler/*> from the solver.
Added another sample model (which current fails because of problem with non-incident diff vars.

Fixed 'hires' test (needed to rack down the tolerances a bit)
Removed newton test (until we make some changes to the solvers var list)
All of TestIDADENSE passes now and will be added to the buildbot list.

Added 'hires.a4c' test model.
Split slv_system_structure out of slv.c and into system_impl.h.
Changed void* diffvars pointer in slv_system_structure to a typed pointer.
Moved SolverDiffVarCollectionStruct into system_impl.h.
Renamed slv_system_structure to just system_structure (in anticipation of a 'system' module separate from the actual solvers).

Added getParameter by name in SolverParameters.
Fixed up refences to signal-related header files.
Fixed up various warnings from -pedantic compilation.
Identified an apparent bug with RelationCalcGradient (unsafe version).
Added support for compilation of a standalone C++ program (idatest) in SCons build.

Split diffvars stuff out of analyse.c.
Fixed IDA to work when vars are fixed/freed after the integration system is build.
There will still be problems where fixing/freeing a *derivative* causes relations to drop out.

Added except.[ch] which are intended to hold some TRY..CATCH..FINAL macro goodness to replace the explicit longjmp calls.
Added time-watching in LSODE to update GUI in case of long samplelist timesteps (TODO: permit interruption vai this mechanism too).

Several changes to get BinToken compilation active again from PyGTK interface. Still not working but the problems now are in the C layer.
Tidied doc for slvDOF.h
Changed BinTokenSetOptions to saner use of strings -- no more 'taking ownership' of char arrays passed.
Added Compiler.use_binary_compilation option in PyGTK GUI.
Moved all the bintoken stuff out of class Type and into Compiler, where it should be (C++).

Fixed bug with memory deallocation for partitioner in ida.c
Silenced some debug output in ascSignal.c
Fixed execution of Python test suite (CUnit tests will need more work before running via this approach)

Added Matrix Market export routines (from math.nist.gov).
Added necessary build commands for above.
Work on Jacobi preconditioner for IDA (ongoing)
Set integrator_analye to make a call to slv_block_partition. Not sure if that's a good idea or not.
Tidied up comments in linsol.h
Moved unnecessary #defines from model_reorder.h into model_reorder.c.
Cleaned up codedocs in mtx*.h
Added WITH_MMIO config.h flag.

Fixed the 'repeated test' bug (a static pointer to a destroyed symchar was being used in type.cpp)
Improved error reporting for 'not a refined solver_var' message.
Refactors Library::listModules and Library::getModules to use shared code.
TODO: find a more efficient solution to the static pointer problem above.

Fixed a bug with initial time step in IDA (and added a checking asc_assert)
Added switch to turn on and off 'IDACalcIC'.
Changed 'already loaded' ASC_PROG_ERR into ASC_PROG_WARN (so that repeated 'IMPORT' doesn't cause problems)
Removed unnecessary solver tricks from shm.a4c (for easier debugging of Integrator API)
Widened self_test limits in zill.a4c.
Some more debugging in simulation.cpp.
Breaking down test.py into smaller test classes (thinking about moving it to its own directory)

Cleaned up code comments in units.h
Fixed a bug with starting timesteps in LSODE (i think)
Added function to output a SampleList to the console (for debugging)
Removed debug output from base/generic/test/SConscript.
Removed 'custom' headers for UnitsM in ascpy.i
Made a sane default ctor for UnitsM
Added some more test cases to the Python unittest suite (still a problem running multiple solver-based tests in a single run)

Removed references to 'ASC_BIG_BUGMAIL' and 'ASC_MILD_BUGMAIL'
Disabled stream redirection functions (they were making testing difficult)
Re-wrote the main test-runner to permit specific tests to be run from the commandline (ongoing)
Disabled readln tests that required stream redirection.

Merged changes from DAE branch (revisions 702 to 819) back into trunk.
This adds the Integration API to the ASCEND solver (in base/generic).
Also provides pre-alpha support for 'IDA' from the SUNDIALS suite, a DAE solver.
Many other minor code clean-ups, including adoption of new 'ASC_NEW' and friends (to replace 'ascmalloc')
Added some very sketchy stuff providing 'DIFF(...)' syntax, although it is anticipated that this will be removed.

This form allows you to request diffs between any two revisions of this file.
For each of the two "sides" of the diff,
enter a numeric revision.